Excuse me for being the crypto-heretic that I am:
Why - for any other than PR-purposes - should the most centralised of apps choose a decentralized system a currency?
FB has centralization written all over its DNA.
Sure, blockchain sounds as sexy as "internet" did 18yrs ago.
But thats in about it. Big corporations have little to gain from decentralisation.
But it sure sounds cool...
I agree totally big corporations main goal is to make more money for the share holders.
They'll have a lot to gain once it becomes clear that centralized organizations can't compete with decentralized ones.